In an earthworm nerve impulse transmission experiment, students were asked to test the inhibitory effects of some unknown compounds. upon the addition the students observed that there was no action potential generation at all. on comparing to the known compounds mentioned below, predict the unknown compound?

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

When does dna replication(make a copy of itself)?

How can an organ, such as the lungs, work for multiple body systems?